Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 12:00 AM ET · 3 nonstops

Sat, Oct 10 looks like a normal day here: all 3 nonstops are 12–20% likely to arrive 15+ min late.

Safest bet that day DL 696 SLC 00:06 → BOS 06:10 · 12% chance 15+ min late · usually 92% on time Riskiest DL 702 SLC 17:20 → BOS 23:52 · 20% chance 15+ min late · usually 79% on time

Every nonstop on Sat, Oct 10

12-month record →

Ranked by the chance of arriving 15+ minutes late (typical odds: the weather this date has had in past years), with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort.


DL 696 Delta Flight history →	SLC 00:06	BOS 06:10	12%	2%	0.5%	92%
DL 657 Delta Flight history →	SLC 09:50	BOS 16:36	15%	3%	0.5%	82%
DL 702 Delta Flight history →	SLC 17:20	BOS 23:52	20%	5%	0.5%	79%

How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Sat, Oct 10 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON